i mean these cardinals have been appointed by pope benedict xvi and john paul ii so i don't think we'll see a situation of conflict. >> pelley: why can't the vatican seem to settle on a date for the conclave to begin to select the new pope? >> well part of it is logistical. we have to wait until the pope actually leaves, which will happen on thursday. and then on friday we begin the period of the sette vacantis the vacant seat. and this is all regulated within the vatican rules and they will need time, of course, to set up the sistine chapel, to set up the logistical aspects of holding a conclave within itself. and then they will need some time to meet in order to discuss exactly who their preferred candidate will be. so i think if we're looking at a week that's moving pretty quickly for the vatican. >> pelley: delia gallagher in st. peter's square in rome thank you so much. what's behind an increase in teen driving deaths? the supreme court takes up a challenge to a landmark civil rights law. and a hot air balloon tragedy when the "cbs evening news" continues. from washington. i have l